1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Veseljchak [2.6K]
2 years ago
13

A book is pushed off the edge of a table. At what point during the fall will the potential and kinetic energy be equal?

Chemistry
1 answer:
vfiekz [6]2 years ago
5 0

Answer:

KE = PE at half the table Height:

Explanation

AT ANY POINT IN THE BOOK'S FALL,

TOTAL E = PE +KE

THE TOTAL E IS CONSTANT

Before the book is pushed off, the total energy is potential

TOT E=PE =MGH

BEFORE THE BOOK HITS THE GROUND, THE TOTAL E IS KINETIC

TOT=KE = MVXV/2

WHEN KE = PE

KE+PE =<u> MGH (STARTING ENERGY SINCE E IS CONSERVED)</u>

<u>OR PE+ PE = MGH</u>

<u>OR MGH' + MGH' =MGH</u>

<u>OR 2H' =</u>H

H' (NEW HEIGHT) =H/2

You might be interested in
Assuming tea leaves contain 5.0% caffeine by weight what is the maximum weight of caffeine you could isolate from 10.g of tea le
Fiesta28 [93]

Answer:

0.50 g Caffeine

Explanation:

Step 1: Given data

Concentration of caffeine by weight in tea leaves: 5.0%

Mass of tea leaves: 10. g

Step 2: Calculate the maximum weight of caffeine that can be isolated

The concentration of caffeine by weight in tea leaves is 5.0%, that is, there are 5.0 g of caffeine per 100 g of tea leaves. The maximum weight of caffeine in 10. g of tea leaves is:

10. g Tea leaves × 5.0 g Caffeine/100 g Tea leaves = 0.50 g Caffeine

7 0
2 years ago
What volume will 2.35 moles of nitrogen gas, at STP, occupy?
snow_tiger [21]

Answer:

STP of 1atm and 273 k for pressure

4 0
2 years ago
Which equation represents an addition reaction?
jeka57 [31]

c3h6 + cl2---- c3h6cl2 is a type of  equation represents an addition reaction because new products are formed.

<h3>What is addition reaction?</h3>

Addition reaction is a type of reaction in which one molecule combines with another to form a bigger molecule having no other products. We can see that the above reaction has no byproduct.

So we can conclude that c3h6 + cl2---- c3h6cl2 is a type of  equation represents an addition reaction because new products are formed.

Learn more about reaction here: brainly.com/question/26018275

#SPJ1

4 0
1 year ago
Please help me with this first one to answer gets brainlyest!!!!!!!!
Dmitriy789 [7]

Question 1:  Which of the following is true?

Answer:

            Figure II and Figure IV are both compounds.

Explanation:

                   Compound is a substance which is formed by chemical reaction of different elements.

Example:

              Water  =  H₂O  =  Which is made up of hydrogen and oxygen atoms.

              Carbon Dioxide  =  CO₂ =  Which is made up of carbon and oxygen                       atoms.

In given figures, Figure I and Figure III are not compounds because Figure I is containing a substance which is made up of same atoms like N₂, O₂, Cl₂ and Figure III is containing a substance which is made up of single monoatomic element like Ne, Kr, Xe gases.

____________________________________________________________

Question 2:  Which of the following statement is true?

Answer:

            The Figure is the Molecule and a Compound

Explanation:

                    Molecules are formed when two or more, either same or different atoms join chemically. While, compound is any substance which formed when two different atoms join together chemically.

                    In given figure, it can be seen that the particles are made up of two atoms. Hence, it is said to be a molecule. Also, the atoms which are forming the molecule are different in color means, they are different atoms therefore, it is also called as compound.

____________________________________________________________

Question 3:  Which of the following list includes only molecules?

Answer:

            Third List only include Molecules

Explanation:

                    Molecules are formed by the combination of two or more same or different atoms. In given options;

List 1 is containing a substance ( Mg ) which is existing in monoatomic form. It means we can exclude the first list.

List 2 is containing a substance ( Fe ) which is existing in monoatomic form. It means this list can also be excluded.

List 3 is containing all substances in molecular forms. Like NaCl made up of Na and Cl, N₂ made up of two nitrogen atoms and H₂O (water) made up of two hydrogen and one oxygen atoms.

List 4 is containing a substance ( He ) which is existing in monoatomic form. It means this list can also be excluded.

4 0
2 years ago
calculate the amount of heat needed to boil 119. g of benzene, beginning from a temperature of 5.9°C.​
givi [52]
Whajsjsisisihsisaooaaoapalsk
4 0
2 years ago
Read 2 more answers
Other questions:
  • An aluminum can weighing 10 g absorbs 106.8 J of heat and warms by 12oC. What is the specific heat of the aluminum can?
    11·2 answers
  • 4.564000 x 10^-4 express how many significant figures
    13·1 answer
  • When you compress a spring, which type of energy increase
    7·1 answer
  • If iron metal reacts with an aqueous solution of silver nitrate and zinc reacts with an aqueous solution of iron sulfate, rank t
    9·1 answer
  • You need to determine the specific gravity of a sample. After putting the sample on a lab scale, you know it has a mass of 85 gr
    13·1 answer
  • Please hurry asap I WILL MARK BRAINLEST
    10·2 answers
  • Volume and mass examples
    11·1 answer
  • Need water cycle project ideas. I need to make a video about the water cycle for my teacher but i dont have any ideas.And, i do
    5·2 answers
  • Yield for this reaction?<br> Reaction: N2(g) + 3 H2(g) → 2 NH3 (g)
    14·1 answer
  • Substances that dissolve in water nd give up OH-ions are considered what
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!